Exemple #1
0
        private bool ScanMultiLineRawStringLiteralLine(
            int startingQuoteCount, StringBuilder indentationWhitespace)
        {
            TextWindow.AdvancePastNewLine();

            indentationWhitespace.Clear();
            ConsumeWhitespace(indentationWhitespace);

            // after the whitespace see if this the line that ends the multiline literal.
            var currentQuoteCount = ConsumeQuoteSequence();

            if (currentQuoteCount >= startingQuoteCount)
            {
                // A raw string could never be followed by another string.  So once we've consumed all the closing quotes
                // if we have any more closing quotes then that's an error we can give a message for.
                if (currentQuoteCount > startingQuoteCount)
                {
                    var excessQuoteCount = currentQuoteCount - startingQuoteCount;
                    this.AddError(
                        position: TextWindow.Position - excessQuoteCount,
                        width: excessQuoteCount,
                        ErrorCode.ERR_TooManyQuotesForRawString);
                }

                // Done scanning lines.
                return(false);
            }

            // We're not on the terminating line. Consume a normal content line.  Eat to the end of line (or file in the
            // case of errors).
            while (true)
            {
                var currentChar = TextWindow.PeekChar();
                if (IsAtEndOfText(currentChar))
                {
                    this.AddError(TextWindow.Position, width: 0, ErrorCode.ERR_UnterminatedRawString);
                    return(false);
                }

                if (SyntaxFacts.IsNewLine(currentChar))
                {
                    return(true);
                }

                if (currentChar == '"')
                {
                    // Don't allow a content line to contain a quote sequence that looks like a delimiter (or longer)
                    currentQuoteCount = ConsumeQuoteSequence();
                    if (currentQuoteCount >= startingQuoteCount)
                    {
                        this.AddError(
                            position: TextWindow.Position - currentQuoteCount,
                            width: currentQuoteCount,
                            ErrorCode.ERR_RawStringDelimiterOnOwnLine);
                        return(false);
                    }
                }
                else
                {
                    TextWindow.AdvanceChar();
                }
            }
        }